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Norwegian State Railways type 25

Baldwin-built 25c No. 383 around 1960 at Trondheim

The NSB type 25 was a 0-6-0T tank locomotive used for shunting and transfer duties. Compared to the type 23, it had a lower axle load . Its basis was the type F of the NHJ (Norsk Hoved-Jernbane). There were five varia...

General

Property	Norwegian State Railways type 25 25a 25a 25b 25d 25e Remove
Built	1909-1922, 1947
Manufacturers	Hamar Jernstøberi, Baldwin, Thunes, Norsk Maskin Industri, SLM
Wheel arrangement	0-6-0T (Six-coupled)
Gauge	1,435 mm (Standard gauge)

Dimensions and weights

Property	Norwegian State Railways type 25 25a 25a 25b 25d 25e Remove
Length	8.67 m
Wheelbase	3.12 m
Rigid wheelbase	3.12 m
Empty weight	25.9 t
Service weight	35 t
Adhesive weight	35 t
Axle load	11.7 t
Water capacity	5,300 l
Fuel capacity	1.2 t (coal)

Boiler

Property	Norwegian State Railways type 25 25a 25a 25b 25d 25e Remove
Grate area	1.17 m²
Tube heating surface	58 m²

Power plant

Property	Norwegian State Railways type 25 25a 25a 25b 25d 25e Remove
Driver diameter	1,060 mm
Boiler pressure	12 bar
Expansion type	simple expansion
Cylinders	two, 360 x 500 mm

Power

Property	Norwegian State Railways type 25 25a 25a 25b 25d 25e Remove
Power source	steam
Estimated power	200 kW (272 PS)
Top speed	40 km/h
Starting effort	62.4 kN

Calculated values

Property	Norwegian State Railways type 25 25a 25a 25b 25d 25e Remove
Factor of adhesion	1 : 5.51
Optimal speed	19 km/h
Power-to-weight ratio	5.7 kW/t
Adhesive weight/Total	1 : 1.00

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